It makes sense, yet the only place I've read it is from the sellers of the magnesium form, and also in the article cited in my post above, the man got rid of calcium placque by taking the calcium version of EDTA. Here's that clip again:
"The February 2004 issue of the health newsletter "Prescriptions for Healthy Living"
reported that a 75-year-old man who was suffering from arteries clogged in the legs took 5,000 mg. (5 grams) of Calcium EDTA per day. In addition to the intermittent claudication, he was blind for the last 3 years. Four months later, (he was alto taking other supplements) his intermittent claudication went away -- and his vision returned!
"Ronald," the daily use of 5,000 mg (5 grams) of Calcium EDTA for his weight of 175 lbs."